| Business | Phone |
| Beacom Construction Co 659 Main St, Fortuna 95540 | (707) 725-3323 |
| D K Construction 167 S Fortuna Blvd, Fortuna 95540 | (707) 725-2111 |
| Pacific Builders The Eagan 2921 School St, Fortuna 95540 | (707) 726-9413 |
| Dove Construction 2 Pinecrest Dr, Fortuna 95540 | (707) 725-6679 |
| Elt Enterprises 1323 Fernbridge Dr, Fortuna 95540 | (707) 725-2124 |
| Epi Construction 1055 Main St, Fortuna 95540 | (707) 726-7838 |
| Forrest Anderson Construction 1824 Kelli Way, Fortuna 95540 | (707) 725-2780 |
| Gendreau Construction 1850 Riverbar Rd, Fortuna 95540 | (707) 768-2027 |
| Zupancs Construction 553 6th St, Fortuna 95540 | (707) 725-1283 |
| Wallace Structures 3516 Kenmar Rd, Fortuna 95540 | (707) 725-1759 |
| Wendt Construction Co 1660 Newburg Rd, Fortuna 95540 | (707) 725-5641 |
| Stipek Construction 5147 Mill St, Fortuna 95540 | (707) 725-6217 |
| Huggler Construction 2031 State Highway 36, Fortuna 95540 | (707) 768-3190 |
| Jan Construction 661 Summer St, Fortuna 95540 | (707) 725-4957 |